cubicweb #2192336 cubicweb-ctl i18ncube returns status 0 on failure [validation pending]

Failure should be reflected in the status code.

prioritynormal
typebug
done in3.14.5
load0.250
load left0.000
closed by#65b0d2587fb5 [cubicweb-ctl] i18ncube return 2 (failed command) on failure (closes #2192336)